Truck-brake.



W. S. ADAMS.

TRUCK BRAKE.

APPLICATION FILED SBPT.14, 190s.

. Patented Mar. 2, 1909.

3 SHEETS-SHEET 1.

| l b 1 l I l W. S. ADAMS.

TRUCK BRAKE.

APPLIOATION FILED SEPT.14, 1908.

914;, 101 V Patented Mar. 2, 1909.

3 SHEETSSHEET 2.

q vi/bwwbao W. S. ADAMS.

TRUCK BRAKE. APPLICATION FILED SEPT 14, 1908.

Patented M21122, 1909.

3 SHEETS-SHEET 3.

" To all whom it may concern:

' referred to.

- which the ollow ingis a specification.

ventio'n reference is to be had to the accomthe housing attached to abrake beams Figs.

WALTER S. ADAMS, OF PHILADELPHIA,

PENNSYLVANIA, ASSIGNOR'TO THE J. G. BRILL COMPANY, OF PHILADELPHIA,PENNSYLVANIA,

TRUCK-BRAKE I Specification of Letters Patent.

Patented March 2, 1 909.

Application filed September 14,1908. Serial No. 452,971.

Be it known that I, WALTER S. ADAMS, citizen of the United States, and aresident of the city and county of Philadelphia, State 3 ofPennsylvania, have invented a new and useful Im rovement inTruck-Brakes, of

The object of my invention is to simplify and improve the structure ofcar brakes so that the brakes will obtain more satisfactory resultsthanthose heretofore used. This object is accomplished by my invention, oneI embodiment of Which is hereinafter set forth.

For a more particular description of my inpanying drawings forming apart hereof, in which: 1

Figure -1 is a side elevation of my improved brake, arts of truck beingshown by dotted lines. ig. "2 is an end view of housing, Fig. 3 is aside elevation of the same. Fig. 4 shows a housing in section and thehanger. Fig. 5 is a plan View ofthe structure shown in Figs. 2 and 3.Fig. 6 is a side elevation of 7 and 8 are end lan views of this housing,the brake beam eing omitted. Figs 9, 10, 11, 12, 13 and 14, are detailviews showing portions of a socket. Fig. 15sh0ws awasher.

ig. 16 is a-side elevation of a ball with trunnions ada ted to fitin'the socket above igs. 17 and 18'are side and end elevations,respectively,'0f a portion of, a hanger.

Throughout the various views of the drawings, similarreferencecharacters designate s1m1lar parts.

My improved right lever 2 which is connected to a bra e chain or similardevice by 3 and the upper end of the upright lever 2 moves in a guide 4secured to the truck 5 in any suitable. manner. The'lever .2 isfulcrumed at 6 in a crotch 7 secured to the brake beam 8 in any suitablemanner, and the lower end of the upright lever 2 is pivoted at 9 to asleeve 10 which is on a bolt 11 with screw threads of opposite pitch atits otherend and on which is mounted a corresponding sleeve 12 which ispivotally connected to a second upright lever 13 which passes through acrotch v14 which is secured to a brake beam 15 by any suitable means andthe upper end of the upright lever .13 has an elongated opening 16 heldtogether by rivets brake 1 consists of an'u castings 38 and 39 throughwhich passes a pivot 17 which may of several holes 18 in v a bracket 19carried by the truck 5. The sleeves 10 and 12 may be considered with thebolt 11 as a turn buckle, as by turning this bolt the sleeves 10 and 12may be either drawn together or separated, as may be necessary foradjustment. The brake beams 8 and 15 also carry suitable brake shoeholders 20 which carry brake shoes 21 in the con-. ventional manner. Thebrake beams 8 and 15 are supported by suitable hangers 22 mounted neareach endof Housings 23 are secured to the truck 5 and preferably to thetransoms 24 or other suitable means. The housings 23 eachconsisting oftwo castings 25 and 26 are or other suitable means 27 and they are alsoprovided with suitable ears 28 to which bolts 24 are secured. Betweenthe castin s 25 and 26 are the elongated openings 29 t rough whichextend the trunnions 30 of the ball 31. The hangers 22 are riveted orotherwise secured to trunnions 30 as shown in Fig. 4. The housings 23also carry sockets 32 which sockets are composed of the wedges 33 andtop casting 34, and the bottom castings 35. These socket castings areput on to the ball 31 and then the parts of the housings 23- are placedover these castings and then the parts 25 and 26 of the housings arerivetedtogether by the rivets 27 leaving the trunnions 30 of the ball 31projecting through the openings 29. These openings 29 are covered bywasher 36, so that be placed in any dust, Water or other injuriousmatter cannot enter the ball and 'bearin socket joint and a largesurface will always be available for said-joint so that wear is reducedto a minimum. The wear is taken up automatically by the wed es 33 whichhave coiled springs 4.3 which also press against the housings. The Wedge33 has a groove 44 and ,the socket 34'has a tongue 45 so that theseparts will be held in proper relation. -In the preceding paragraph hasbeen described the ball and socket joint for the upper end of thehanger. The lower end of the hanger supports the brake beam with thesame identical ball 31 and trunnions 30 and sockets 32, but the housing32 is different.

The lower housings 37 are divided into two and 41 respectively, throughwhich bolts pass to secure them to the brake beam8 or the thereof bybolts with projecting cars 40 brake beam 15. The castings 38 and 39 haveelongated openings 42 between them through which trunnions 30 areadapted to pass.

As shown in Fig. 1 the hangers 22 do not hang vertically, but aresplayed towards wheels at their lower ends so that when the brakes arereleased the wei ht of the shoes, shoe-holders and beams wil besuflicient to make the brake shoes leave the wheels without the actionof any spring if such an action should be desired.

As my improved brake is used in the conventional manner, it is notnecessary to describe its action in detail. It is suflicient to say thatthe ball and socket connections of the hangers to the housings permitthe brake beams to have a limited universal movement 'so that they willalways adjust themselves to any small inequalities andonable the brakeshoes to rub firm and true against the wheels.- The structure is alsosuch that the ball and socket oints will be kept absolutely free fromdirt or other matter that would tend to corrode or injure them.

While I have shown and described one embodiment of my invention, it isobvious that it is not restricted thereto, but that it is broad enoughto cover all structures that come within the scope of the annexedclaims.

Having thus described my invention, what I claim is:

1. In a device of the class described, a

hanger composed of a pair of links connected ing said socket, saidhousing being adapted to be secured to a truck and means supporting saidhousing and links for'preventing dirt from entering between said balland socket.

3. In a device of the class described, a pair of links connected at eachendby a ball and trunnions, a socket on one of said balls and a housingsurrounding said socket adapted to be secured to a truck and anothersocket on the other said ball and a housing surrounding this socket withmeans for securing the same to a brake beam.

4. In a device of the class described, a housing composed of twocastings having an opening between 'them and a three part socket, twoparts of said socket being adapted to press against a ball and a thirdpart being provided with springs and adapted to force one of said partsagainst said'ball.

Signed at Philadelphia, Pa. the 9th day of September, 1908.

WALTER S. ADAMS.

Witnesses:

HARRY F.:MoK1LL1P, HENRY O. ESLING.

